Mercurial > sdl-ios-xcode
annotate test/torturethread.c @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:05:16 +0000 |
| parents | 1dd8bf30a109 |
| children | d5298e8f22b3 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple test of the SDL threading code */ | |
| 3 | |
| 4 #include <stdio.h> | |
| 5 #include <stdlib.h> | |
| 6 #include <signal.h> | |
| 7 #include <string.h> | |
| 8 | |
| 9 #include "SDL.h" | |
| 10 #include "SDL_thread.h" | |
| 11 | |
| 12 #define NUMTHREADS 10 | |
| 13 | |
| 14 static char volatile time_for_threads_to_die[NUMTHREADS]; | |
| 15 | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
16 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
17 static void quit(int rc) |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
18 { |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
19 SDL_Quit(); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
20 exit(rc); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
21 } |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
22 |
| 0 | 23 int SubThreadFunc(void *data) { |
| 24 while(! *(int volatile *)data) { | |
|
1154
d93862a3d821
Fixed compiler warnings in Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
1151
diff
changeset
|
25 ; /*SDL_Delay(10);*/ /* do nothing */ |
| 0 | 26 } |
| 27 return 0; | |
| 28 } | |
| 29 | |
| 30 int ThreadFunc(void *data) { | |
| 31 SDL_Thread *sub_threads[NUMTHREADS]; | |
| 32 int flags[NUMTHREADS]; | |
| 33 int i; | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1154
diff
changeset
|
34 uintptr_t tid = (uintptr_t)data; |
| 0 | 35 |
| 36 fprintf(stderr, "Creating Thread %d\n", tid); | |
| 37 | |
| 38 for(i = 0; i < NUMTHREADS; i++) { | |
| 39 flags[i] = 0; | |
| 40 sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]); | |
| 41 } | |
| 42 | |
| 43 printf("Thread '%d' waiting for signal\n", tid); | |
| 44 while(time_for_threads_to_die[tid] != 1) { | |
| 45 ; /* do nothing */ | |
| 46 } | |
| 47 | |
| 48 printf("Thread '%d' sending signals to subthreads\n", tid); | |
| 49 for(i = 0; i < NUMTHREADS; i++) { | |
| 50 flags[i] = 1; | |
| 51 SDL_WaitThread(sub_threads[i], NULL); | |
| 52 } | |
| 53 | |
| 54 printf("Thread '%d' exiting!\n", tid); | |
| 55 | |
| 56 return 0; | |
| 57 } | |
| 58 | |
| 59 int main(int argc, char *argv[]) | |
| 60 { | |
| 61 SDL_Thread *threads[NUMTHREADS]; | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1154
diff
changeset
|
62 uintptr_t i; |
| 0 | 63 |
| 64 /* Load the SDL library */ | |
| 65 if ( SDL_Init(0) < 0 ) { | |
| 66 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
67 return(1); |
| 0 | 68 } |
| 69 | |
| 70 signal(SIGSEGV, SIG_DFL); | |
| 71 for(i = 0; i < NUMTHREADS; i++) { | |
| 72 time_for_threads_to_die[i] = 0; | |
| 73 threads[i] = SDL_CreateThread(ThreadFunc, (void *) i); | |
| 74 | |
| 75 if ( threads[i] == NULL ) { | |
| 76 fprintf(stderr, | |
| 77 "Couldn't create thread: %s\n", SDL_GetError()); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
78 quit(1); |
| 0 | 79 } |
| 80 } | |
| 81 | |
| 82 for(i = 0; i < NUMTHREADS; i++) { | |
| 83 time_for_threads_to_die[i] = 1; | |
| 84 } | |
| 85 | |
| 86 for(i = NUMTHREADS-1; i >= 0; --i) { | |
| 87 SDL_WaitThread(threads[i], NULL); | |
| 88 } | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
89 SDL_Quit(); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
90 return(0); |
| 0 | 91 } |